my awesomest math puzzle

(A+B)(B-B)
ARCHIMEDES
BRAMHAGUPTA
DAVIDHILBERT
HIPPOCRATES
INTEGERS
IRRATIONAL
ISAACNEWTON
RATIONAL

it contains all math stuff

Try to find all 9 words on this board.

X E Z S K Q H S Q Y B H K E T
S L A N O I T A R R I O E Z T
F F H R X V L T A P H A T Y )
T Z W G N O H T P I T R X B D
P T S L L C I O Z P E H - D H
N F D J N O C B U B Q B I P E
E L V X N R T G L D ( R H E P
W P F A A U A I S ) Y P P U W
O K L T W H H Y B U W Q N Z J
K L E R M D V + A K K G B Y N
H S I A I S A A C N E W T O N
F J R V K ( Z H Y V O W O L H
Q B A R C H I M E D E S J F M
N D N S Y X M D Y A H B E N U
J M C C I N T E G E R S C H Z
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Answer Key for my awesomest math puzzle

X
Y
123456789101112131415
1# # # # # # # # # # # H # # #
2# L A N O I T A R R I # # # #
3# # # # # # # # A P # A T # )
4# # # # # # # T P # T R # B #
5# # # # # # I O # P E # - # #
6# # # # # O C # U B # B # # #
7# # # # N R # G L # ( # # # #
8# # # A A # A I # ) # # # # #
9# # L T # H H # B # # # # # #
10# # E # M D # + # # # # # # #
11# S # A I S A A C N E W T O N
12# # R V # ( # # # # # # # # #
13# B A R C H I M E D E S # # #
14# D # # # # # # # # # # # # #
15# # # # I N T E G E R S # # #
Word X Y Direction
(A+B)(B-B)  711ne
ARCHIMEDES  313e
BRAMHAGUPTA  213ne
DAVIDHILBERT  88ne
HIPPOCRATES  121sw
INTEGERS  515e
IRRATIONAL  112w
ISAACNEWTON  511e
RATIONAL  102sw